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Cascades™ Actively Cooled Diode Laser Bars

(Non Visible)

nLIGHT’s non visible, actively cooled Cascades™ diode laser bars provide end users with state-of-the-art power, brightness and reliability. These 1 cm bars are based on our proprietary MOCVD structures which offer low beam divergence and narrow spectral bandwidth.

Our Cascades™ actively cooled diode laser bars are available in a wide range of wavelengths from 808 nm to beyond 2000 nm. The design of these devices allows multiple packages to be placed side by side. Available with an optional water manifold for ease of use. 		 

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  C1-xxx-yyy1
Optical
 
    
 
Center wavelength (Range) nm 790 - 825 790 - 825 790 - 825
Center wavelength tolerance nm ± 3  ± 3 ± 3
CW output power / bar W 60 80 100
Bar length cm 1 1 1
Number of emitters / bar # 49 64 64
Emitter size µm 100 100 120
Emitter spacing µm 200 150 150
Spectral width (FWHM) nm < 3  < 3 < 3
Slope efficiency W / A > 1.1 > 1.05 > 1.0
Polarization TM or TE TM  TM TM
Fast-axis divergence (FWHM) Degrees 36°  36° 36°
Slow-axis divergence (FWHM) Degrees 10°  10° 10°
Wavelength temperature coefficient2  nm / °C 0.28 0.28 0.28
Electrical
 
    
 
Power conversion efficiency % 55 48 48
Threshold current (ITH) A 14 24 26
Operating current (IOP) A 60 92 110
Operating voltage / bar (VOP) V 1.8 1.8 1.85
Series resistance / bar (RS) Ω 0.005 0.005 0.005
Mechanical
 
    
 
Storage temperature range3 °C 10 to 40 10 to 40 10 to 40
Thermal
 
    
 
Thermal resistance4  °C / W 0.35 0.35 0.35
Operating temperature °C 20 to 35 20 to 35 20 to 35
Fluid flow rate ml/min/plate 200 - 250 200 - 250 200 - 250
Max inlet pressure psi 55 55 55
Inlet to outlet pressure drop psi 35 35 35
Deionized water resistivity MΩ - cm 0.15 - 0.3 0.15 - 0.3 0.15 - 0.3
Filter µm < 20 < 20 < 20

  C1-xxx-yyy1
Optical
 
    
 
Center wavelength (Range) nm 910 - 980 910 - 980 1400 - 1600
Center wavelength tolerance nm ± 3  ± 3 ± 5
CW output power / bar W 60 80 25
Bar length cm 1 1 1
Number of emitters / bar # 49 49 19
Emitter size µm 100 100 100
Emitter spacing µm 200 200 500
Spectral width (FWHM) nm < 4  < 4 < 10
Slope efficiency W / A > 0.9 > 0.9 > 0.4
Polarization TM or TE TE  TE TE
Fast-axis divergence (FWHM) Degrees 38°  38° 27°
Slow-axis divergence (FWHM) Degrees 10°  10° 10°
Wavelength temperature coefficient2  nm / °C 0.3 0.3 0.4
Electrical
 
    
 
Power conversion efficiency % 50 52 30
Threshold current (ITH) A 8 12 10
Operating current (IOP) A 70 95 70
Operating voltage / bar (VOP) V 1.6 1.6 1.2
Series resistance / bar (RS) Ω 0.005 0.005 0.005
Mechanical
 
    
 
Storage temperature range3 °C 10 to 40 10 to 40 10 to 40
Thermal
 
    
 
Thermal resistance4  °C / W 0.35 0.35 0.35
Operating temperature °C 20 to 35 20 to 35 20 to 35
Fluid flow rate ml/min/plate 200 - 250 200 - 250 200 - 250
Max inlet pressure psi 55 55 55
Inlet to outlet pressure drop psi 35 35 35
Deionized water resistivity MΩ - cm 0.15 - 0.3 0.15 - 0.3 0.15 - 0.3
Filter µm < 20 < 20 < 20
1 C1-xxx-yyy: xxx denotes wavelength and yyy denotes rated output power.
2 The wavelength temperature coefficient is the wavelength shift per °C change at the diode junction.
3 A non-condensing environment is required for storage and operation below ambient dew point.
4 Thermal resistance is the diode junction temperature shift per incremental Watt of heat load.

 

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